How can I create a mouse Shortcut in Blender 2.8x or 2.9x to select object siblings in a collection with double click
I manage to do it with this config in the keymap configuration:
under preferences - keymap - 3D View - Object Mode (Global)

Then when working, when doing double click on an object I select the &quot;Collection type&quot; in the sub menu.
Later it remembers the last option used.
Now I can select objects in a collection quickly. Kinda like the &quot;grouping&quot; objects in another software.
Thanks.